1990766

Information

• Patent Grant
• 1990766

• References
• Source

• Patent Number

  1,990,766

• Date Filed

  Not available

• Date Issued

  Tuesday, February 12, 1935
  89 years ago

• CPC

  • H02P9/20 - due to variation of continuously-variable ohmic resistance

• US Classifications

  • 322 - Electricity: single generator systems